CVE-2019-20457

Description

An issue was discovered on Brother MFC-J491DW C1806180757 devices. The printer's web-interface password hash can be retrieved without authentication, because the response header of any failed login attempt returns an incomplete authorization cookie. The value of the authorization cookie is the MD5 hash of the password in hexadecimal. An attacker can easily derive the true MD5 hash from this, and use offline cracking attacks to obtain administrative access to the device.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.11%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://global.brother
https://support.brother.com/g/s/security/en/index.html
https://seclists.org/fulldisclosure/2024/Jul/14 mailing list

Frequently Asked Questions

What is the severity of CVE-2019-20457?
CVE-2019-20457 has been scored as a critical severity vulnerability.
How to fix CVE-2019-20457?
To fix CVE-2019-20457, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20457 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-20457 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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